f(x)'s�Krystal made fans laugh with an adorable photo of herself and fellow member�Amber. On her me2day, Krystal wrote, "Our Josephine, who picked the picture of her eating my hat as the best cut." Dressed in their "Hot Summer" stage outfits, the girls are seen fooling around as Amber attempts to chomp her hat, while Krystal wore a nervous expression. Fans commented,�"Ah so funny, kekekekeke, you're cuties~~!!!!","Hot girls~hot hot~," and�"When are you making a comeback?" Source + Photo: Krystal's me2day